Sash-lock.



. CARTER.

SH LOCK.

1.22111 FILLED JAN.12.'1911.

995,429. I Patented June 13,1911.

'i 7 I945 Fm? Q/JW BITE %ATE% A'FENT .MABTIN J. CARTER, OF ST. LOUIS,MISSOURI.

SASHGLOCK.

Application filed January 12, 1911.

To all whom it may concern:

Be it known that I, MARTIN J. CARTER, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Sash-Locks, of which the following is aspecification.

My invention relates to improvements in sash locks, and moreparticularly to sash locks of the type known as burglar proof, theobject of the invention being to provide a lock of this character whichcan be manufactured and sold at a very low price, which is of extremesimplicity, which reduces the necessity for boring to a minimum, andwhich most effectually locks and at the same time tightly draws thesashes together, preventing rattling and making a tight juncture betweenthe sashes.

A further object is to provide improvement upon the structure disclosedin Patent No. 805,742 granted to me November 7,1905.

With these and other objects in View, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, as will be more fully hereinafter described and pointed out inthe claim.

In the accompanying drawings: Figure 1, is a view in plan illustratingmy improvements attached to ordinary window sashes. Fig. 2, is a view insection on the line 22 of Fig. 1. Fi 3, is a view in section on the line3-3 0 Fig. 1. Fig. 4, is a view in section on the line 4- of Fig. 1, andFig. 5, is a detail perspective View of the locking lever.

1, and 2, represent the meeting rails respectively of lower and uppersashes which are locked by my improvements as will now be explained.

3 is a bracket which is secured to the bar 2 of the upper sash, and 4:is a bracket secured to the bar 1 of the lower sash. These brackets areboth cast, and are secured in place by screws 5. Bracket 3 is providedcentrally at its inner edge with parallel recessed ears 6. It will benoted particularly by reference to Fig. 2 that these perforated earshave their recesses downward, so that they operate as bearings forintegral trunnions 7 on one end of a locking lever 8. By reason of theserecessed ears 6, the pivotal connection between bracket 3 and lever 8 ishad without the necessity for boring,

Specification of Letters Patent.

Patented June 13, 1911.

Serial No. 602,159.

which is a very expensive feature in a device of this kind.

Bracket f is provided with an upright integral block 9, and lever 8 ismade with an elongated opening 10 to pass over this block 9 and engagethe curved or cam front face 11 of said block, so that when the lever isforced downward by means of its finger hold 12 at its free end, it will,by reason of its engagement with the cam face 11, draw the meeting rails1 and 2 tightly together. Block 9 is made with a recess 13 for theaccommodation of a pawl 14 which is pivoted between its ends on a pin 15as shown. One end or this pawl 14: is weighted by being enlarged andlaterally oif-set as shown at 16, so as to maintain it in normalposition, and this pawl is swung by the lever 8 as the lever moves intolocking position, so as to permit the lever to move beneath the pawl andbe securely locked thereby when said pawl assumes its normal position asshown in Figs. 2 and 3.

The recess 13 is so shaped that the pawl 14 cannot turn completelyaround, nor past the vertical, so that the weighted end 16 will alwayshold the pawl in proper position. Furthermore, when in locking position,the oft-set or weighted portion of the pawl rests against the inner faceof the block 9 and the opposite end is directly above the lever. By thisarrangement, any attempt to raise the sash will force the lever againstthe outer end of the pawl and as the cit-set portion of the pawl bearsagainst the block the upward movement of the lever, and hence of thesash, is positively prevented. The end of lever 8, adjacent the trunnion7. is provided with a shoulder 17 which strikes the bar 2 and preventsany possibility of the lever being thrown into contact with the glass.

In operation, assuming the sashes to be together, it is simply necessaryto pull the free end of the lever downward, and its engagement with thecam face 11 will draw the bars 1 and 2 tightly together, and pawl 14will be moved outof the way and then fall into locking position shown inFigs. 2 and 3. When in this position, the bar cannot be raised exceptthe pawl be operated, but this can be conveniently done by simplyplacing the thumb against the end of the pawl as the operator grasps thefinger hold 12, so that the pawl may be operated simultaneously with thelifting movement of the lever.

Various slight changes might be made in the general form and arrangementof parts described without departing from my invention, and hence I donot limit myself to the precise details set forth, but consider myselfat liberty to make such changes and alterations as fairly fall withinthe spirit and scope of the appended claim.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A sash lock comprising two brackets, adapted to be secured to therespective sashes, ears on one bracket recessed in their under faces, alocking lever, trunnions on said locking lever arranged in saidrecesses, an integral block on the lower sash bracket having an outercam face, said lever having an opening to receive said block and onewall of said opening engaging said cam face whereby said sashes aredrawn together by the downward movement of said lever on said block,said block being provided with a recess, a pawl pivotally mounted insaid recess and normally lying in a substantially horizontal positionwith the for ward end of the pawl normally projecting beyond said camface and adapted to engage over the lever when the latter is in lookingposition, the rear end of said pawl being provided with laterallyoff-set portions forming a weight for said end and said off-set portionsabutting the rear wall of said block, to resist upward movement of theouter end of the pawl from looking position, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MARTIN J. CARTER.

lvitnesses R. H. KRENKEL, C. E. Por'rs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

